Detailed investigation of the bifurcation diagram of capacitively coupled Josephson junctions in high-Tc superconductors and its self similarity

2018 ◽  
Vol 547 ◽  
pp. 66-68 ◽  
Author(s):  
Mohammad Hamdipour
Keyword(s):  
Bifurcation Diagram ◽  
Josephson Junctions ◽  
High Tc Superconductors ◽  
Self Similarity ◽  
High Tc ◽  
Capacitively Coupled

Pair Symmetry and Degree of Gap Depression at S-I Interfaces in HTS Josephson Junctions

1999 ◽  
Vol 13 (09n10) ◽  
pp. 1301-1306
Author(s):  
G. A. Ummarino ◽  
R. S. Gonnelli ◽  
C. Bravi ◽  
Masumi Inoue
Keyword(s):  
Josephson Junctions ◽  
Order Parameter ◽  
Reference Value ◽  
High Tc Superconductors ◽  
S Wave ◽  
General Reference ◽  
High Tc ◽  
Wave Symmetry ◽  
Set Up ◽  
D Wave

A new possible indirect way of testing pair symmetry in high-Tc superconductors has been set up. The degree of intrinsic gap depression at Superconductor-Insulator [S-I] interfaces required to match Ic(T)Rn(T) data in HTS Josephson junctions depends on the pair symmetry of the material itself, so that an higher fraction of d-wave symmetry for the order parameter requires less gap depression, while an higher fraction of s-wave corresponds to a larger degree of gap depression. In order to obtain a general reference value for the intrinsic amount of gap depression at S-I interfaces the de Gennes condition has been used, and resulting reduced Ic(T)Rn(T) data have been calculated in the framework of a mixed (s+id)-wave pair symmetry for the depressed order parameter ranging from pure s to pure d-wave. This model has been tentatively applied to two junctions' made of very different HTSs: YBCO and BKBO, yielding a result of almost pure d-wave for YBCO and of pure s-wave for BKBO.

Phase slippage in a magnetic field at intra- and intergranular Josephson junctions in high-Tc superconductors

1990 ◽  
Vol 170 (3-4) ◽  
pp. 222-230 ◽  
Author(s):  
G.B. Smith ◽  
K.-H. Müller ◽  
C. Andrikidis ◽  
S.W. Filipczuk ◽  
J.M. Bell ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Josephson Junctions ◽  
High Tc Superconductors ◽  
High Tc ◽  
Phase Slippage

JOSEPHSON JUNCTIONS IN SINGLE-CRYSTAL YBa2Cu3O7

1988 ◽  
Vol 02 (05) ◽  
pp. 1113-1120
Author(s):  
A. G. Lebed
Keyword(s):  
Magnetic Field ◽  
Boundary Condition ◽  
Josephson Junctions ◽  
Positive Curvature ◽  
Epitaxial Films ◽  
High Tc Superconductors ◽  
Characteristic Distance ◽  
High Tc ◽  
Surface Superconductivity ◽  
The Magnetic Field

It's shown, that I − V characteristics of the epitaxial films[1] and unusual magnetic properties of the single crystals[2] may be attributed to the forming on the defects of the plural Josephson junctions. We have given the estimations of the dielectric gap, of the transparence of the corresponding energy barriers and the characteristic distance between them. It's studied the surface superconductivity in the magnetic field. We have marked, that non-trivial boundary condition for High-Tc superconductors[3] lead to the positive curvature on dependence Hc 3 (T) .

Sign in / Sign up

Export Citation Format

Share Document